Invention Application
- Patent Title: DENTAL ZIRCONIA MILL BLANK FOR CUTTING AND MACHINING INCLUDING INDIUM AND YTTRIUM
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Application No.: US17502376Application Date: 2021-10-15
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Publication No.: US20220202544A1Publication Date: 2022-06-30
- Inventor: Kazumichi NONAKA , Shuhei TAKAHASHI
- Applicant: SHOFU INC.
- Applicant Address: JP Kyoto
- Assignee: SHOFU INC.
- Current Assignee: SHOFU INC.
- Current Assignee Address: JP Kyoto
- Priority: JP2020-174307 20201016
- Main IPC: A61C13/08
- IPC: A61C13/08 ; A61C13/00 ; A61C13/083
Abstract:
[Problem]
A technique for imparting high translucency which is similar to an enamel of a natural tooth to a zirconia sintered body, has been required.
[Solution]
To provide a zirconia mill blank for dental cutting and machining, containing, an yttrium compound and an indium compound as stabilizers, wherein, an amount of the yttrium compound is within a range of 3.0 mol % to 6.0 mol % in terms of oxide, an amount of the indium compound is within a range of 0.2 mol % to 3.0 mol % in terms of oxide, and a total amount of the yttrium compound and the indium compound is within a range of 5.5 mol % to 7.0 mol % in terms of oxide.
A technique for imparting high translucency which is similar to an enamel of a natural tooth to a zirconia sintered body, has been required.
[Solution]
To provide a zirconia mill blank for dental cutting and machining, containing, an yttrium compound and an indium compound as stabilizers, wherein, an amount of the yttrium compound is within a range of 3.0 mol % to 6.0 mol % in terms of oxide, an amount of the indium compound is within a range of 0.2 mol % to 3.0 mol % in terms of oxide, and a total amount of the yttrium compound and the indium compound is within a range of 5.5 mol % to 7.0 mol % in terms of oxide.
Information query
